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Electromagnetic Field Theory

Electromagnetic Field Theory
In a dielectric material an applied field in x direction Ex = 5 v/m gives a polarization of px = 3/10π ux nc/m2. The susceptibility of the material is

 Infinity.
 4.32.
  2.16.
 Zero.

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Electromagnetic Field Theory
1 Maxwell is the same as

 104 weber.
 10-4 weber.
 10-8 weber.
 10-8 weber.

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Electromagnetic Field Theory
The magnetic field required to reduce the residual magnetism to zero is called

 Retentivity.
 Hysteresis.
 Coercivity.
 Saturation magnetism.

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Electromagnetic Field Theory
Between a hollow and solid metal sphere, charge reside

 None of above.
 on outer surface in hollow and throughout in solid
 on outer surface in both.
 on outer surface in hollow and throughout in solid.

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Electromagnetic Field Theory
Magnetic field intensity at centre of circular coil, of diameter 1 m and carrying a current of 2 A is

 1 A/m.
 2 A/m.
 8 A/m.
 4 A/m.

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Electromagnetic Field Theory
The main disadvantage of the two-hole directional coupler is

High standing wave ratio
Low directional coupling
Poor directivity
Narrow bandwidth

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MORE MCQ ON Electromagnetic Field Theory

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